Pulley-clutch bushing.



No. 883;'5'59; PATENTED MAR. s1. 190s.' J'.. w. MCGRBGOR e L. G. PBRRIS.

PULL-EY CLUTCH BSHINGrE Pulau-19N FILED 001218. 19o?.

LEONARD G. FERma 0M @Hoz-muta To all iei'tojm Muon 'SpecificationofvLett'eIs Fatent.

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Patented March 31,1908.

d Applicatianmed ocmberisisoz semina. agusto.

'it fmag/ concern:

Be it knov n that We, Joux and LrioNALn G. Fleurus, citizens ot thellnited States, vresidingrat Tacoma, in the county' olrlielrce and Stateof ,Vilashine'ton7 have? invented Ia new and useful improvevment inPuller-Clutch Bushings, ol' which the following is a. specllication.

'lhis invention is a clutch particularly adapted for pulleys and'ilustrated in the form of a bushing forsplit'pulleys, but. serrit-cablein connection with pulleys on wheels of various kinds mounted on a shal't.

'lhe object of the. invention is to provide a clutch which will catch ineitherd irection and consequently cannot be placed wrong' upon ashalt,and which u'illvefl'ectiyel): prevent any slip between the shaftand thepulley, since a roller wedge is used which tightens as the loadincreases. Y The device also has the. advantage of simplicity and fewparts Theinvention is illustrated in the accompanying` drawings, inwhich Figure 'l is a side-"elevation of the clutch or bushing. Figi 2isa section.

In the drawings, l0' indicates the shaft on which the bushing ismounted; and ll is the hub of the pulley or `Wheel in the eye of whichthe bushing is placed.

The bushing` is split or formed .in two inlets.,-

havino' semi-circular end oiec'eslQ semi-cin .D 4 l f.

cular outside pieces 13, and semi-circular 1nside pieces 1st. The endand outer pieces forni a'split casing which contains the inside piecesand the -rollers'l which tit between the inside and outside pieces, andcause the clutching'action by their pressure tliereben tweenl tending`toyexpand the outside pieces in the ere of the*{prille}v and to Contactt-he inside pieces upon.' the shaft.

The inner .end outer surfaces of the outside pieces are cylindrical inforni, and so are the.

distance `between the' inner and louter ring surfaces. The sections 13of t'lie outer ring are connected to the end pieces-12 by means ofAscrews 1T extending loosely through slots 1S in the end pieces, and thesections 14 ot' the inner ring' are fixed to the end pieces by screws19, although this arrangement may he reversed if desired. It will beevident that the connection is such that the rings may be movedrelatirelxv either radially or to a slight degree, causing' the rollersto` travelvup the inclines formed by the plane surfaces 16. rlfhisexpands the bushing', pressing the outer ring 'sc-rctionsvagamst thepulley hub and the inner ring sections against the shaft, and thepressure increases With'the strain,` therebyv forniing'thc clutch. Asshown the parts fare symmetrical and will therefore clutch either wa\,an,d it is the sante. `Whether theshaft on the pulley is. the

driver or noti 1When niceljv iitted there is Verjsvl little backslip instarting or stopping". YWe claiinel. A clutch bushing' comprising split.outer and inner rings with opposite surfaces -Viuf" clined toward euchother, and rollers lor'z'ited bet-Ween the rings and hearing' upon s-,udsurfaces.

The combination with` a shaft and pulley, of a clutch bushingr in theeye of the pulley, comprising' inner and outer split rings' bearingagainst the shaft and pulley hub-rel spectirelv, said vrinus beingspacei'l apart with surfaces inclined toward each other, androllers insaid space. between 'said sur faces.

clutch bushingl comprisingl an outer ring', an inner split ring` spacedtherefronif.

the'outer surface of the inner ringel having faces inclined toward saidouter ring, and rollers between .sa-id faces and the outer ring.

s. clutch hushiuu' comprising split outer and inner rings spasmi apart,the surface of

